Radzihovsky L
Physics Department, University of Colorado, Boulder, Colorado 80309, USA.
Phys Rev Lett. 2001 Dec 3;87(23):236802. doi: 10.1103/PhysRevLett.87.236802. Epub 2001 Nov 15.
We predict that in nu(T) = 1 bilayer quantum Hall (QH) pseudoferromagnets, an in-plane magnetic field can induce a reentrant pseudospin "canting" transition between interlayer charge balanced (planar) to imbalanced (canted) QH states. At T = 0 ( T>0) this quantum (classical) transition is in a new, anisotropic, compressible (2+1)D (2D) Ising universality class. The striking experimental signatures are the universal nonlinear charge-voltage and in-plane field relations, and the divergence of the differential bilayer capacitance at the transition, resulting in a bilayer capacitor that spontaneously charges itself, even in the absence of an applied interlayer voltage.
我们预测，在ν(T)=1的双层量子霍尔（QH）赝铁磁体中，面内磁场可诱导层间电荷平衡（平面）到不平衡（倾斜）QH态之间的折返赝自旋“倾斜”转变。在T = 0（T>0）时，这种量子（经典）转变属于一个新的、各向异性的、可压缩的（2+1）D（2D）伊辛普适类。显著的实验特征是通用的非线性电荷-电压和面内场关系，以及转变处双层微分电容的发散，这导致即使在没有施加层间电压的情况下，双层电容器也能自发充电。
